a) Warm up the transmission fluid to operating temperature (50-80°C).
b) Unscrew the service plug of the gearbox housing and connect a pressure gauge in its place. Apply the parking brake and place chocks under the wheels.
Caution: Perform the check with two people - one person should watch the wheels or wheel stops and the other should perform the check.
(The article is taken from a web resource: ToyotaMan.ru)
2. Measure the pressure.
a) Disconnect the automatic transmission electronic control unit connector.
b) Start the engine.
c) Apply battery voltage to the terminals "25" (+) -"24" (-) (solenoid valve No.2) and "26" (+) - "24" (-) (solenoid valve #1). Check the pressure as shown in table "Line Pressure (A540N before 1994.)".
Note: Perform the test on the "L" range.
